Ryo Oshima
Tokyo, Japan
Summary
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SeniorRyo Oshima is an application developer with 12 years of experience, currently building iOS products at IBM Japan where he delivered core features for a first-of-its-kind multi-payment service and led a four-person WWDC research team. Skilled in Swift, TypeScript, Node.js/Deno, and Firebase, he combines hands-on mobile UI/animation work with backend engineering and custom tooling—authoring a static analysis script that cut bug incidence without breaking builds. He mentors junior engineers and drove cross-functional teams to ship a weekly task manager and a Tinder-like matching app, owning both client and server integrations. With a master’s in electronic physics from Osaka University and an award-winning conference presentation, he brings a research-informed curiosity to practical product development. Notably, he implemented SMTP/IMAP from scratch for a custom mail client, demonstrating low-level protocol fluency beyond typical app dev tasks.
12 years of coding experience
Github Skills (10)
livereload10
p5js8
management7
nodejs7
javascript3
node-app3
node-canvas2
canvas2
browser2
typescript1
Programming languages (2)
Github contributions (5)
oshimaryo/get-canvas-max-size
Jan 2022 - Nov 2022
get the maximum size of the canvas element in the browser
Contributions:26 commits, 12 PRs, 14 pushes in 10 months
maximumbrowsernode-canvascanvasjavascript
oshimaryo/kinokuniya-stock-checker
Jan 2018 - Dec 2025
Contributions:8 PRs, 10 pushes, 7 branches in 8 years
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